RAINBOW SANDALS. 301ALTNF-SRBR. LAS FLORES. SIERRA BROWN. The team here knows the ladies love the half inch narrow strap so we ve taken the staple in premier leather and laser etched some cute flower power on the strap of the Las Flores. The single layer premier leather sandal is made of top grade nubuck leather the top sole is embossed with the Rainbow logo. This model comes with a half inch narrow strap also nubuck leather it is double stitched and the nylon toe piece is secured with a box X stitch all using bonded nylon thread.